2024 results by precinct
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Margin—
Turnout—
Harris +50Trump +50
Real precinct boundaries. Hover for vote totals.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 2,019 | 4,998 | 7,146 | |
| 2020 | R | 2,206 | 4,929 | 7,276 | |
| 2016 | R | 1,856 | 4,527 | 6,944 | |
| 2012 | R | 2,635 | 4,215 | 6,962 | |
| 2008 | R | 2,790 | 3,945 | 6,828 | |
| 2004 | R | 2,386 | 4,429 | 6,849 | |
| 2000 | R | 2,139 | 3,851 | 6,111 | |
| 1996 | R | 2,322 | 2,928 | 5,687 | |
| 1992 | R | 1,895 | 3,160 | 6,156 | |
| 1988 | R | 2,211 | 3,433 | 5,682 | |
| 1984 | R | 1,915 | 4,527 | 6,518 | |
| 1980 | R | 1,869 | 4,644 | 7,026 | |
| 1976 | R | 2,410 | 4,173 | 6,660 | |
| 1972 | R | 1,844 | 4,706 | 6,625 | |
| 1968 | R | 1,675 | 4,866 | 6,840 | |
| 1964 | D | 3,582 | 3,215 | 6,808 | |
| 1960 | R | 2,174 | 4,989 | 7,166 | |
| 1956 | R | 1,908 | 4,915 | 6,827 | |
| 1952 | R | 1,483 | 5,652 | 7,156 | |
| 1948 | R | 2,344 | 3,154 | 5,647 | |
| 1944 | R | 2,191 | 3,625 | 5,834 | |
| 1940 | R | 2,745 | 3,908 | 6,674 | |
| 1936 | D | 3,918 | 2,656 | 6,703 | |
| 1932 | D | 3,661 | 2,419 | 6,134 | |
| 1928 | R | 1,620 | 3,671 | 5,318 | |
| 1924 | R | 615 | 3,322 | 5,743 | |
| 1920 | R | 714 | 4,662 | 5,432 | |
| 1916 | R | 1,015 | 2,127 | 3,164 | |
| 1912 | D | 1,149 | 421 | 3,095 | |
| 1908 | R | 1,105 | 1,861 | 3,013 | |
| 1904 | R | 938 | 2,021 | 3,037 | |
| 1900 | R | 1,203 | 2,025 | 3,277 | |
| 1896 | R | 1,206 | 1,894 | 3,138 | |
| 1892 | R | 1,355 | 1,375 | 2,842 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
American
100.0%
Sample size too small to break out by ancestry reliably.
Multiple ancestry combinations reported; no single grouping above 1%.
Sample size too small to break out by ancestry reliably.
American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.
Source · American Community Survey 5-year estimates, 2024 release. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
Age distribution by sex
Median age: 41.9 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$87,205
Grundy County ranks in the top 10% of US counties.
Grundy County$87,205
Iowa$75,059
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
6.5%
Children face moderate poverty.
Children under 1818.0%
Working age (18–64)100.0%
Seniors (65+)18.0%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
0.0%
speak English only
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 50.8% of residents not counted as adherents by any reporting body.
Grundy County's flat, productive farmland anchors an electorate that has shifted decisively rightward over two decades, delivering R+41.7 in 2024 — among the widest presidential margins of any county in the state.
The Republican margin in Grundy County reached its widest at seventy-three points in 1920. The margin in 2024 was forty-two points, in line with the county's deep historical pattern.
Grundy County's loyalty is rooted in its place. Median household income of $87,205, a 95% non-Hispanic-white share, and a population of 12,384 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Dickey County and Jasper County.
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